Tapered Radius - Single Cut

1/2" Tapered Radius SC Carbide Burr SL-5NF

Double cut burrs remove material quickly from the hardest of metals, but will plug up quickly if used on softer metals  Tuff Grade Catalog 

3/8" Tapered Radius SC Carbide Burr SL-3NF

Single cut burrs are best suited to softer, non ferrous, metals like aluminum as they will not plug up the cutting surface like a double cut would  Tuff Grade Catalog